I hate English. This fixes ordinal numbers in the birthday message using wrong suffix.

DeukBot4/Database/BirthdayHandler.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Threading.Tasks;
 using DeukBot4.MessageHandlers.CommandHandler;
+using DeukBot4.Utilities;
 using StackExchange.Redis;
 
 namespace DeukBot4.Database
@@ -140,7 +141,8 @@ namespace DeukBot4.Database
                     var eb = EmbedFactory.GetStandardEmbedBuilder();
                     eb.Title = $":confetti_ball::confetti_ball: Happy Birthday! :confetti_ball::confetti_ball: ";
                     var age = Years(birthday, today);
-                    eb.Description  = $"It's <@!{guildUser.Id}>'s {age}th birthday!! Have a good one!";
+                    string ageString = EnglishNumberParser.GetShortOrdinalNumber(age);
+                    eb.Description  = $"It's <@!{guildUser.Id}>'s {ageString} birthday!! Have a good one!";
                     eb.ThumbnailUrl = guildUser.GetAvatarUrl();
 
                     guild.SystemChannel.SendMessageAsync("", embed: eb.Build());

DeukBot4/Utilities/EnglishNumberParser.cs

@@ -83,5 +83,23 @@ namespace DeukBot4.Utilities
             return null;
         }
 
+
+        public static string GetShortOrdinalNumber(int number)
+        {
+            var tensDigit = number % 100 / 10;
+            if (tensDigit == 1) return $"{number}th";
+            switch (number % 10)
+            {
+                case 1: 
+                    return $"{number}st";
+                case 2: 
+                    return $"{number}nd";
+                case 3:
+                    return $"{number}rd";
+                default:
+                    return $"{number}th";
+            }
+
+        }
     }
 }